Example usage for com.amazonaws.services.dynamodbv2.datamodeling DynamoDBScanExpression DynamoDBScanExpression

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.datamodeling DynamoDBScanExpression DynamoDBScanExpression.

Prototype

DynamoDBScanExpression

Source Link

Usage

From source file:org.socialsignin.spring.data.dynamodb.repository.query.DynamoDBEntityWithHashKeyOnlyCriteria.java

License:Apache License

public DynamoDBScanExpression buildScanExpression() {

    if (sort != null) {
        throw new UnsupportedOperationException("Sort not supported for scan expressions");
    }/*from w w  w.  ja  va2 s .  c o  m*/

    DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
    if (isHashKeySpecified()) {
        scanExpression.addFilterCondition(getHashKeyAttributeName(),
                createSingleValueCondition(getHashKeyPropertyName(), ComparisonOperator.EQ,
                        getHashKeyAttributeValue(), getHashKeyAttributeValue().getClass(), true));
    }

    for (Map.Entry<String, List<Condition>> conditionEntry : attributeConditions.entrySet()) {
        for (Condition condition : conditionEntry.getValue()) {
            scanExpression.addFilterCondition(conditionEntry.getKey(), condition);
        }
    }
    return scanExpression;
}

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From source file:org.socialsignin.spring.data.dynamodb.repository.support.SimpleDynamoDBCrudRepository.java

License:Apache License

@Override
public List<T> findAll() {

    assertScanEnabled(enableScanPermissions.isFindAllUnpaginatedScanEnabled(), "findAll");
    DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
    return dynamoDBOperations.scan(domainType, scanExpression);
}

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From source file:org.socialsignin.spring.data.dynamodb.repository.support.SimpleDynamoDBCrudRepository.java

License:Apache License

@Override
public long count() {
    assertScanEnabled(enableScanPermissions.isCountUnpaginatedScanEnabled(), "count");
    final DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
    return dynamoDBOperations.count(domainType, scanExpression);
}

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From source file:org.socialsignin.spring.data.dynamodb.repository.support.SimpleDynamoDBPagingAndSortingRepository.java

License:Apache License

@Override
public Page<T> findAll(Pageable pageable) {

    if (pageable.getSort() != null) {
        throw new UnsupportedOperationException("Sorting not supported for find all scan operations");
    }//from  w  w w. j  av  a 2  s.  c  o m

    DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
    // Scan to the end of the page after the requested page
    int scanTo = pageable.getOffset() + (2 * pageable.getPageSize());
    scanExpression.setLimit(scanTo);
    PaginatedScanList<T> paginatedScanList = dynamoDBOperations.scan(domainType, scanExpression);
    Iterator<T> iterator = paginatedScanList.iterator();
    int processedCount = 0;
    if (pageable.getOffset() > 0) {
        processedCount = scanThroughResults(iterator, pageable.getOffset());
        if (processedCount < pageable.getOffset())
            return new PageImpl<T>(new ArrayList<T>());
    }
    // Scan ahead to retrieve the next page count
    List<T> results = readPageOfResults(iterator, pageable.getPageSize());

    assertScanEnabled(enableScanPermissions.isFindAllPaginatedScanEnabled(), "findAll(Pageable pageable)");
    assertScanCountEnabled(enableScanPermissions.isFindAllUnpaginatedScanCountEnabled(),
            "findAll(Pageable pageable)");

    int totalCount = dynamoDBOperations.count(domainType, scanExpression);

    return new PageImpl<T>(results, pageable, totalCount);

}

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From source file:org.socialsignin.spring.data.dynamodb.repository.support.SimpleMultiTableDynamoDBCrudRepository.java

License:Apache License

@Override
public List<T> findAllInTable(String tableName) {
    assertScanEnabled(enableScanPermissions.isFindAllUnpaginatedScanEnabled(), "findAll");
    DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
    return dynamoDBMapper.scan(domainType, scanExpression,
            new DynamoDBMapperConfig(new TableNameOverride(tableName)));
}

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From source file:se.symsoft.codecamp.SmsTerminatorService.java

License:Open Source License

private void initCache() {
    PaginatedScanList<TerminatorData> pageList = getDynamoDB().scan(TerminatorData.class,
            new DynamoDBScanExpression());
    pageList.stream().forEach(c -> terminatorDataCache.put(c.getRealm(), c));

    new Thread(() -> {
        while (true) {
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }/*from ww  w  .j  av a  2s.c  o m*/
            PaginatedScanList<TerminatorData> pageList1 = getDynamoDB().scan(TerminatorData.class,
                    new DynamoDBScanExpression());
            Map<String, TerminatorData> newData = new HashMap<>();
            pageList1.stream().forEach(c -> newData.put(c.getRealm(), c));
            terminatorDataCache = newData;
        }
    }).start();
}

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